body {
  background: #f7f8fa;
  margin: 0;
  padding: 0;
}

.tooltip, .vt-tooltip {
  font-family: sans-serif;
  position: absolute;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid #ccc;
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 12px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
  pointer-events: none;
  visibility: hidden;
}
